Firstly, before production, we send sample for confirmation.
In production, we send pictures to clients to let clients know production progress.
After goods finished, we send pictures to clients, and after finish production, we send pictures to clients.
All above documents and pictures will be on file.
When we get clients' feedback, we have after-sale service team to solve questions, and talk with engineers to find out reason and root cause to supply the best products to our client.